<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>反转世界案例</title>
  <script src="../vue.js"></script>
</head>

<body>
  <div id="app">
    <div>{{text}}</div>
    <div><button @click="btn">点击反转</button></div>
  </div>
  <script>
    const app = new Vue({
      el: '#app',
      data: {
        text: 'hello World'
      },
      methods: {
        btn() {
          this.text = this.text.split('').reverse().join('')
        }
      }
    })
  </script>
</body>

</html>